While adding a domain or sub-domain in the H-Sphere control panel, H-Sphere says "AntiSpam postmaster@domainname already exists" and does not create the domain?

Solution:-
 1. Un-select the include and activate options for AntiSpam in the specified plan.
 2. Now try to add the domain or sub domain.
 3. Now redo the changes you have made previously in the specified plan.

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